80 ARANEIDEA. 
Palpi: tibia twice as long as its breadth, with a very short, broad, inconspicuous spur on its anterior lower 
apex on the outer side; the apex of the spur is abruptly narrowed. Tarsus very narrow. Bulb also 
very narrow and not inflated basally, being also truncate, in profile; its apex 1s produced into @ very 
small spine which bears another smaller cusp at its base. A thin spur of membrane lies outside this 
a aes . : eee as 
The truncate bulb is somewhat similar to that of 7’. bispinosus, but the table points out the various distinguishing 
characters. 
Hab. Mexico, Frontera in Tabasco (H. H. Smith). 
9. Trachelas similis, sp. n. (ab. VI. fig. 10, 2 .) 
Type, 2, in coll. Godman & Salvin. 
Total length 8 millim. . 
Q. Colour similar to that of 7. bulbosus, but much paler. Carapace orange-mahogany. Structure similar to 
that of the same species, except that the central posterior eyes are two and one-eighth diameters apart, 
three from the laterals. The central eyes are three-fourths of a diameter apart. 
Hab. Mexico, Orizaba (H. H. Smith). 
Subfam. MICARIINAE. 
The four genera including the species of this subfamily which have hitherto been 
taken in Central America may be distinguished as follows :— 
A. Carapace not pedunculate. 
1. Abdomen not or only very slightly pedunculate. 
a. Posterior row of eyes procurved, eyes relatively larger and 
much closer together . . . . . . . . . . « . CastiaANnerra, Keys. 
6. Posterior row of eyes approximately straight, eyes relatively 
much smaller and more separate . . . . . . . . Myrmecortypus, O. P.-Cambr. 
2. Abdomen pedunculate in front, produced into a long, cylin- 
drical, chitinous, rugulose pedicle. 
a. Posterior row of eyes approximately straight, eyes relatively 
larger and closer together. . . . . . . . . ~« « Mazax, O. P.-Cambr. 
b. Posterior row of eyes strongly recurved, eyes relatively 
smaller and wider apart . . . . . . . =. . . . Apocuinomma, Pavesi. 
B. Carapace pedunculate behind, forming a long smooth pedicle . Spruecorypus, O. P.-Cambr. 
Nore.—In Hist. Nat. Araign. éd. 2, il. p. 175, E. Simon quotes Myrmecotypus, O. P.-Cambr., as a synonym 
of Apochinomma, Pavesi. He has kindly sent me an example, 9, of this last-mentioned genus from Natal, 
which is closely allied to the Central-American form, the chief difference lying in the position of the eyes. 
The genus Myrmecotypus has been retained on the grounds that the posterior row of eyes is only slightly wider 
than the anterior and almost straight; the central posteriors are further from each other than from the 
laterals, and the central anteriors are much larger than the lateral anteriors. In Apochinomma (sec. 
received from E. Simon) the posterior row is very much wider than the anterior and strongly recurved ; the 
central posteriors are closer together than to the laterals, and the central anteriors are only slightly larger 
than the laterals. 
Mazax may prove to be congeneric with Corinnomma severum, Thor., the type of Corinnomma, Karsch. 
